Pump



Jan. 3l, 1928.

J. vB. GARBr-:R

PUMP

Filed Feb. 13, 1925 3 Sheets-5heet l Jan. 31, 11928. 1,657,746

J. B. GARBER PUMP Filed Feb.- 13, '1926 3 Sheets-Sheet 2 5 1an. 3l,

J. B. GARBER PUMP Filed Feb. 13. 1925 3 Sheets-Sheet 3 t n a v n atto:uw

Patented Jan. 3l, 1928.

UNITED STATES n 1,657,746 PATENT OFFICE;

JESSE B. GARBER, F SALEM, OHIO, ASSIGNOR T0 THE DEMING COMPANY, OFSALEM, OHIO, A CORPORATION 0F OHIO.

PUMP.

Application led February 13, 1926. Serial No. 88,005.

This invention is directed to improvements in piston pumps. Such pumpsusually embody check valves disposed at the inlet and outlet portsthereof which are respectively responsive to suction and pressure uponthe operation of the piston. Such valves usually entail the embodimentof a number of accurately machined partsin the pump, eventuallyresulting in an inefficientln operation of the pump due to wear. Theingress of extraneous matter carried into the pump by the fluid passingtherethrough 'also frequently interferes with -the accurate seating ofthe valve members. The general object of my invention therefor is theprovision of a -valve mechanism in the form of a simple unitarystructure,

which in my present embodiment 'is illustrated as being particularlyadaptable for use in oscillating piston pumps and which mechanism is ofsuch character as to eliminate the use of the usual check or poppetvalve members.

A further object of my invention is the provision of anlosc-illating'pump embodying a minimum number of'parts, economicallyformed, which will efficiently function irrespective of the ipresence ofextraneous solid matter in the lfluid passing through the A stillfurther object of my inventionis the'provision of a simple valvemechanism for a pump of the character referred to which'may comprise asingle member for controlling the pump inlet and outlet ports.

Other objects of my invention will hereinafter be set forth in thefollowing description referrin to the accompanying drawingsillustratinga -preferred form thereof.

' of the casing as will b e hereinafter described.

l The essential characteristics are summarized in the claims.

In the drawings, Fig. 1 is a perspective view of an oscillating pist-onpump embodying the features of my invention. Fig. 2 is a perspectiveview of a member comprising all'of the valve mechanism of the pump. Fig.3 is a perspective view of the pump piston. Fig. 4 is a cross-sectionalelevation taken through the center of the pump. Fig. 5 is across-sectional view taken substantially along the line 5-5 of Fig. 4.Fig. 6 is a cross-sectional view similar to the view shown in Fig. 5 butillustrating a shifted position of the valve mechanism. Fig. 7 is acrosszsectional view 'similar to the view' -valve decks or valvecarrying membersl with at least two valve members operatively attachedto each deck.'

My invention contemplates the use of a simple valve -mechanism which mayalso comprise the casing partitioning means and in Figs. 4 and 5, I showthe pump as comrising the usual casing 10 having a suitable ore forreceiving the `oscillating piston 11 and a' partitioningl meansin theform of an oscillating valve member 12. The piston is provided with ashaft 14 and the-=casing is suitably formed at one end as shown at 15 toafford Aa bearing for properly supporting the piston shaftv 14. Astuffing box gland 16, packing sleeve l7vand a `nut :18 carried. by thecasing serve to pack. the shaft 14. An operating handle 2O is shown inFig. 4, mounted on an extension of the shaft 14 and operating the piston11. The opposite end of the casing may be sealed by a closure disk 22,having formed at its center a cup-shaped portion 24 to receive a springmember 25 at its inner end, bearing against the valve member 12 to urgethe latter member into contact with'the end of the piston and an endwall The closure member 22 may be secured to the casing by any suitablemeans such as boltmembers, indicated at in Fig. 6.

The casing may be provided with an upper threaded branch 9 incommunication. with the interior of the casing throu( h an outlet port10h and a lower threaded ranch 9a 1n communication with the interior ofthe cas- These. passegeivafs extend in; a. cnisscross' arms. contactat:theA ends thereon with thcbore of the casing and oscillaie; incompart--ments 31 and 32. which are formed Within the pump casing by the peculiarconstructiom of the valve member 12. The sides of the arms areaccurately ftirmed'tocontact'- with the end walls of the compartmentsand the passageways serve, to establish communication between the-.twocompression sides and thensluction. sides of the piston arms when thepiston oscillated.

'Ehe h ub surface ofthe piston is preferably c oncentrically formed to'accurately-'fit the vglvemembei 12 whereby leakagebet-Ween the. casingzcompartmentsl isprevented and tlievalvemember, as shown in Fig: 24-mayQOIYPYSQ indctail, a disk port-ion 40 -oi sutiiqieut diameter to.accuratcflfv [it v,the bored of tliecasing and upon this clisk40 .-vpre-fer to integrally forni' Casin -I partitioning Wallis 4 1 a ud`4;2'; Thesev'iralls may-be offsfuoh shape that radial'v endsthereofw'ill, Overl-ieor be disposed at, either side bytheoutletpont1()hand the pair of" inlet ports 10 a-vnd'- the-Wall 41j is accordingly of;such-44 shape aswillprovide two inlet passageways 41-.i Whenthe disk.member-@fis rocked o r oscillatedi wlthin the pump casing,- one offits'passagewaiys is alternately. brought into registrationwith one offthe,inlet'- ports' 10;! and a petition-412 ot' the wall 42l is alternatelyshitedito' be disposed to one-or-the otherside offthegoutlet port 10".The wall?42'is`underout'annu1ar- 1y, .as shown; at '45A'. whereby.'lcommunication may be establishedbetween-the outlet.- port 10bandfeitherone, of the compartments-31 and32. The innernradialpendsofi-the partition Walls 41 and 42 are? concentrioal'l-y formed' relativeto the-centerofthe-.disk 40 to, accurately fitltheconcentnioportgionfoii the piston hub, as stated` whereby-leakage fromonel compartment' tothe other-of the." pump is prevented;v ItWill'thusbe' seen that when the pump piston is osci'llated, pressure 1sbrought to bear on the-liquid. presentini the compartment inalternateannular directions thus causingv the disk member to. oscillatewithin the pump casing. and.- I.- provid'e; means for limiting-thisoscillating -movementffg be valve memberv 12 relativeto-the-piStQn1movements which may' comprise a pini on screw member 4.6l (see Fig.- 4),extending'iuW-ardly from an en d wall ofthe casing into-a cavity 42",`formed in the-wall 42 of thedisl; member 40.

The width ot the walls'l 41 and,V 42 is accurately defined to-equal theWidthof; the pump arms 11- and 1'1"- whereby-the action of the sprinf:r25 upon the valve? member will' urge the dislt portion Vof the. latteragainst the end of the pistony and thew-all portions 41 andv 42 againstthe innen end iizjall" ot the casing thus preventing undue leakage-otthe fluid between the valve mehr bers, the piston and the casing as thepiston and Valve-memben are. oscillatcd. The operationof, thepump asfollows:

Assuming"r the piston to be in th(` position .shown in Fig. 5 with thearm 11" in its maximum upward position and the valve meint-)ershiftedztovhhe right to a maximum position determined by the stop pin 46; thenupon a reverse movement ot the pist-on, the arm lbltfhe'reo will startupwardly-andl the arm 11 downwardly and Huid' presentin thecompartnient31 on the under side ot. the arm; 11'a will becomecompressed` Part of this-Huid" Willesc'ape through the passage but'-sufficientpressure will be exertedupon the wall41: 0ftheiva-lvemember-tocause ift-to be shift-edf tothe` position shownin Eig.- 6. thusexposingtiie-outlet' port 10'"-to the compartment 32 andl causing therightrh-and: inlet; passageway L11h-of.- the valueA mombento registerwiththe; iniebporb 10"@ '-Ilhesarmr 11b will thus draxv.- the'fluid'into. the: chaimber 3 2' through-fthe righthand port-1210- andforce the fluidl comingffronr theompartment {R11- through the: outlet-Apor-t 10b duringfits upward movement. When-the movement of the arm'lip-'aften ithasreached its;v maximum upwand .-movement, is reversed`the cycle of pumping. actions. is; repeated. inthe compartmentv 31 bythearm 113-..

It will be evident from the foregoingl description. ofi-the embodimentof m'y-'mvention herein-illustrated. that only two: moving parts* areembodied in the pump-fthe oscillatingpist'on-andi tlie. oscillatingvalve member? and: the' form. o'these .two I'nembers may such-that theymay; readilyand; accurately be manufactured in an economical.- mannen't'o. operate.v in.. a. casi-neef simple design. Having thus.-described my.. invention,A I claim;

1.. Ina pump, the combinatioxn of acasing having aninlet andi anout-let, a piston -disposed within the casing, an oscillatingT valvemeans for alternately opening and clos-ing; saidinlet.v and: outlet`said valve means havinga--d-isc-like pontziomextendingacrossthea-en'd:ofithapiston, and means for urging the piston and valvemeansfintond- -wise'- Contact.

- tablishing-communication betweenthe .chambers, means for oscillating'the: piston and means forpressingVV the. valve means constantly againstthe end of the piston.

3. In a pump 0fthe character described, the combination of a-.casingrhaving anlinletand an outlet, an oscillating piston within the casing,an oscillating` valve means disposed within the casing to control saidinlet and outlet upon an oscillating movement of the piston, said valvemeans comprising means for dividing the interior of the casing into twocompartments and having a disc portion contacting with the end of thepiston, said casing having a cylindrical bore, said valve means and theends of the piston being formed to contact with said bore, and thestraight ends of the piston rubbing against the disc portion.

4. In a pump of the character described, the combination of a casinghaving an inlet and an outlet, an oscillating piston disposed within thecasing, said casing having a cylindrical bore in contact with the endsof the piston, an oscillating valve member contacting with a hub of thepiston, and forming compression chambers within the casing said valvemeans being operative to alternately open and close said outlet andinlet of the casing, the valve means including a disc portion contactingwith the piston and an outer casing closure member lnclosing the valvemember and piston, and a spring shoving the valve member toward thepist0n.

5. In a pump, the combination of a casing having an inlet and an outlet,two valve members respectively connecting the inlet and outlet` a disccarrying the valve members, an oscillating piston havin a pair of wings,one lying at the left 0 one valve member, and the other at the right ofthe other valve member, the end of said piston rubbing against saiddisc, and a spring pushing the disc against the piston.

In testimony whereof, I hereunto allix my signature.

JESSE B. GARBER.

